National Combustion Co., Inc.
Page 2
TABLE OF CONTENTS
SECTION 1. General Information
1.1
Introduction ........................................................ 3
1.2
Model Identification ............................................ 3
1.3
Warranty ............................................................ 4
1.4
Dimensions ......................................................... 4
1.5
Locating the Appliance ....................................... 4
1.6
Locating Pump-Mounted Water Heater
with Respect to Storage Tank(s) ........................ 4
1.7
Locating Pump-Mounted Boiler with Respect .......
to 0Return/Supply Header .................................. 5
1.8
Locating Appliance for Correct Horizontal Vent/ ...
Ducted Air Distance from Outside Wall .............. 5
SECTION 2. Venting and Combustion Air
2.1
Combustion Air ................................................... 7
2.1.1 Combustion Air From Room ............................... 7
2.1.2 Intake Combustion Air ........................................ 7
2.2
Venting ............................................................... 8
2.2.1 Vent Categories ................................................. 8
2.2.2 Category I Vent .................................................. 8
2.2.3 Common Venting Systems ................................. 8
2.2.4 Category III Vent ................................................ 9
2.3
Locating Vent & Combustion Air Terminals ......... 9
2.3.1 Side Wall Vent Terminal ...................................... 9
2.3.2 Side Wall Combustion Air Terminal ..................... 9
2.3.3 Vertical Vent Terminal ......................................... 9
2.3.4 Vertical Combustion Air Terminal ...................... 11
2.4
Common Vent Test — Boilers .......................... 11
2.5
Vent Terminals for Outdoor Units ...................... 12
SECTION 3. Gas Supply and Piping
3.1
Gas Supply and Piping ..................................... 12
SECTION 4A. Water Connections — Boiler
4A.1
Heating System Piping:
Hot Supply Connections — Boiler ..................... 13
4A.2
Cold Water Make-Up — Boiler ......................... 14
4A.3
Water Flow Requirements — Boiler ................. 14
4A.4
Freeze Protection — Boiler .............................. 14
SECTION 4B. Water Connections —
Water Heaters
4B.1
Water System Piping — Water Heater ............. 14
4B.2
Hot Water Supply Piping — Water Heater ........ 15
4B.3
Water Flow Requirements — Water Heater ..... 15
4B.4
Combined Water Heating (potable)
and Space Heating — Water Heater ................ 15
4B.5
Freeze Protection – Water Heater ................... 15
SECTION 5. Electrical Connections
5.1
Main Power ...................................................... 21
5.2
Field Wiring ...................................................... 21
5.3
External Staging Control Wiring ........................ 26
SECTION 6. Operating Instructions
6.1
Sequence of Operation .................................... 26
6.2
Filling the Boiler System ................................... 26
6.3
Operating Temperature Control ........................ 27
6.4
External Boiler Operations ............................... 27
6.5
Limit Controls ................................................... 28
6.6
Operating the Burner and Set Up ..................... 28
6.6.1 Set Up for 0 to 2500 Feet Altitude .................... 28
6.6.2 High Altitude Adjustment and Set Up ................ 28
6.7
Shutting Down the Fire Coil 85 ......................... 29
6.8
To Restart the Fire Coil 85 ............................... 29
SECTION 7. Maintenance
7.1
System Maintenance ........................................ 29
7.2
Appliance Maintenance and
Component Description .................................... 29
7.2.1 Burners ............................................................ 29
7.2.2 Filter ................................................................. 30
7.2.3 Gas Valves ....................................................... 30
7.2.4 Manual Reset High Limit Control ...................... 30
7.2.5 Temperature Control ........................................ 30
7.2.6 Ignition Controls ............................................... 30
7.2.7 Ignitors/Sensor ................................................. 30
7.2.8 Transformer ..................................................... 30
7.2.9 Blowers ............................................................ 30
7.2.10 Flow Switch ..................................................... 30
7.2.11 Heat Exchanger Coil ......................................... 31
SECTION 8. Trouble Shooting
8.1
Resolving Lockouts .......................................... 31
8.2
Delayed Ignition — Possible Causes ................ 31
8.3
Short Cycling — Boiler ..................................... 32
8.4
Short Cycling — Water Heater ......................... 32
8.5
High Gas Consumption ..................................... 32
SECTION 9. Replacement Parts
9.1
General Information ......................................... 32
9.2
Parts List . ....................................................... 33
Summary of Contents for Fire Coil 85
Page 23: ...Fire Coil 85 500 2000 Page 23 Figure 19 Fire Coil 85 500 750 Connection Diagram ...
Page 24: ...National Combustion Co Inc Page 24 Figure 20 Fire Coil 85 1000 Connection Diagram ...
Page 25: ...Fire Coil 85 500 2000 Page 25 Figure 21 Fire Coil 85 1250 2000 Connection Diagram ...
Page 37: ...Fire Coil 85 500 2000 Page 37 Figure 23 Sheet Metal Components ...
Page 38: ...National Combustion Co Inc Page 38 Figure 24 Internal Components ...
